CN102528079A - Processing method and tool of turning chamfering circular arc with outer diameter required to be ground under numerical control - Google Patents
Processing method and tool of turning chamfering circular arc with outer diameter required to be ground under numerical control Download PDFInfo
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- CN102528079A CN102528079A CN201110453551XA CN201110453551A CN102528079A CN 102528079 A CN102528079 A CN 102528079A CN 201110453551X A CN201110453551X A CN 201110453551XA CN 201110453551 A CN201110453551 A CN 201110453551A CN 102528079 A CN102528079 A CN 102528079A
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Abstract
The invention discloses a processing method and tool of turning a chamfering circular arc with an outer diameter required to be ground under numerical control. When a numerical control turning curve diagram is determined, the circular arc chamfer angle of a chamfering part of which the outer diameter is required to be ground is determined as a combined curve; the combined curve is partitioned into two sections one of which is a standard circular arc chamfer angle and the other is a transition curve; and the transition curve is in smooth connection with the standard circular arc chamfer angle. The tool for turning a chamfering circular arc with an outer diameter required to be ground under numerical control comprises a tool shank and a tool bit, wherein the tool bit is a circular-arc tool bit. The tool is characterized in that: the tool bit is a circular-arc tool bit formed by combining two curves; and a circular arc formed by the cutting edge of the tool bit is an arc line structure formed by combining two curves. After the implementation of a technology of the invention, products such as a revolving shaft and the like can keep perfect R circular arcs after processing, the appearance quality of a product is improved greatly, and the assembly quality of a motor is ensured. The method and the tool can be applied to chamfering circular arcs of inner holes and treatment of R circular arcs on outer diameter tool escapes.
Description
Technical field
The present invention relates to a kind of machine-tooled method and process tool, especially relate to circular arc chamfering processing method and process tool that a kind of numerical control turning needs the chamfered part of grinding external diameter; Be mainly used in the numerical control turning processing.
Background technology
During type with disk-like accessory, its shaft shoulder can be designed to a R circular arc usually at all kinds of axle of design, and in turning is processed, tends to directly according to drawing, and the transition arc of chamfered part is directly processed; When especially Digit Control Machine Tool was processed the chamfering circular arc of this type of part, this operation can not go to consider that operation also can not removed the grinding external diameter and gone to carry out handled down usually, all was in programming process, to work out and process complete R circular arc according to designing requirement fully; If but behind the numerical control turning, this external diameter is in the back operation needs grinding, in most of the cases, the complete circular arc that stays behind the numerical control turning can grind off a part in grinding, becomes an incomplete circular arc; So neither attractive in appearance, and just formed sharp edge at the chamfering place, this sharp edge is in follow-up motor assembling process, during special assembling under some interference fit condition, with the smooth completion that hinders assembling, and maybe the corresponding assembly parts of scratch.Once just occurred because rotating shaft has tangible acute angle; In rotor last item process; The sharp edge of rotating shaft resembles the endoporus that a sharp knife is cutting rotor core; Cause the anxious pressure that increases, on forcing press, sets of pressure of last item can not be pressed onto rotating shaft the phenomenon of position, and can obviously see the smear metal foam that is cut out by the rotating shaft sharp edge.
Fig. 1 has represented the way of prior art.When numerical control turning; Directly process a complete chamfering circular arc R 1 (because chamfered part generally can not carry out grinding fine finishining again) through programming, and the operation grinding process has stayed 0.2 mill amount under giving, like this; Though after the turning operation; Process a very complete R1 circular arc, but after grinding, just stayed a tangible sharp edge, seen the enlarged drawing I.
Therefore necessary this is improved.
Summary of the invention
The purpose of this invention is to provide a kind of can effectively overcome fit the complete circular arc that stays behind the numerical control turning and can in grinding, grind off a part, the numerical control turning that becomes an incomplete circular arc needs the circular arc chamfering processing method of the chamfered part of grinding external diameter; This kind circular arc chamfering processing method can avoid numerical control turning to need the circular arc chamfering of the chamfered part of grinding external diameter in grinding, to form the phenomenon of sharp edge fully.
In order to realize the object of the invention; The implementer's case that is proposed is: a kind of numerical control turning needs the processing method of the chamfering circular arc of grinding external diameter; When definite numerical control turning curve map, the circular arc chamfering of the chamfered part of need grinding external diameter is confirmed as a build-up curve; Described build-up curve is divided into two sections, standard circular arc chamfering of a section wherein, and another section is an easement curve; Easement curve and standard circular arc chamfering smoothly join.
Further improve as technical scheme of the present invention, described easement curve can be an oblique line, and oblique line is a tangent runout of standard circular arc chamfering, is extended to the external diameter direction by the end of standard circular arc chamfering.
Further improve as technical scheme of the present invention, described easement curve can be a curve, and the tangent line of easement curve and standard circular arc chamfering intersects, and forms one and seamlessly transits curved surface.
When the described circular arc chamfering section of turning; Can select the corner radius lathe tool or the custom-designed cutter of big (generally selecting R0.8-R1.2) for use; And select for use lower feed rate (generally to select 0.1-0.2 ㎜/min), to reach the purpose that reduces surface roughness.Because surface roughness can be calculated (wherein Ra is a surface roughness value, and K is a coefficient, and f is a feed rate, and R is a corner radius) with formula Ra=K*f2/R, feed rate is low more, corner radius is big more, and the surface roughness that obtains will be more little.
Need the cutter of circular arc chamfering of the chamfered part of grinding external diameter to be as processing numerical control turning of the present invention: a kind ofly process the cutter of circular arc chamfering that numerical control turning needs the chamfered part of grinding external diameter; Comprise handle of a knife and cutter head; Described cutter head is the circular arc cutter head; It is characterized in that cutter head is a circular arc cutter head that two kinds of curves are combined to form, the formed circular arc of the cutting edge of cutter head is two kinds of arc shapes that curve is combined to form.
Further improvement as technical scheme of the present invention; The formed circular arc of the cutting edge of described cutter head is two kinds of arc shapes that curve is combined to form; Can be to be divided into two sections, a standard circular arc chamfering of section cutting edge wherein, another section is an easement curve cutting edge; Easement curve cutting edge and standard circular arc chamfering cutting edge smoothly join.
Further improve as technical scheme of the present invention; Described easement curve cutting edge can be an oblique line; Oblique line is a tangent runout of standard circular arc chamfering cutting edge, extends formed cutting edge by the end of standard circular arc chamfering cutting edge to the external diameter direction.
Further improve as technical scheme of the present invention, described easement curve can be a curve, and the tangent line of easement curve and standard circular arc chamfering intersects, and forms one and seamlessly transits curved surface.
Through implementing the invention described above technical scheme, have following technique effect:
(1) after the present invention's technology was implemented, products such as rotating shaft can maintain a complete R circular arc after processing, and the presentation quality of product has obtained very big improvement, and has guaranteed the assembly quality of motor.But patent art also expanded application in the processing of the R circular arc at the chamfering circular arc of endoporus and external diameter escape place.
(2) technology of the present invention is an improvement on technology and/or the cutter, and a little improvement on technology and/or the cutter just about-face and the quality that ensures whole completed knocked down products greatly, its benefit is beyond measure.
(3) technology of the present invention belongs to initiative at home, can be widely used in all kinds of mechanical industries, is particularly suitable for the manufacturing that product quality requires extra high aviation and track traffic etc. to guarantee personal safety.
Description of drawings
Fig. 1 is the operation sketch map of existing numerical control turning processing;
Fig. 2 is the formed chamfering structure sketch map of existing numerical control turning processing back grinding external diameter;
Fig. 3 is the operation sketch map of numerical control turning processing of the present invention;
Fig. 4 is the formed chamfering structure sketch map of numerical control turning processing back grinding external diameter of the present invention;
Fig. 5 is a numerical control turning process tool cutting edge curved surface sketch map of the present invention.
Wherein: 1-parts, 2-standard circular arc chamfering, 3-easement curve, 4-grinding allowance, 5-cutter head, 6-handle of a knife, 7-cutting edge, 8-standard circular arc chamfering cutting edge, 9-transition arc chamfering cutting edge.
The specific embodiment
In order to be illustrated more clearly in the present invention; To combine accompanying drawing and embodiment that the present invention is done further clear, intactly description below, obviously, the embodiment in describing below; For those of ordinary skills; Under the prerequisite of not paying creative work, can also all belong to the scope of the present invention's protection according to the technology that these accompanying drawings and embodiment obtain other scheme of having a try.
Accompanying drawing 3 to accompanying drawing 4 has provided and the present invention relates to the processing method that a kind of numerical control turning needs the chamfering circular arc of grinding external diameter, when definite numerical control turning curve map, the circular arc chamfering of the chamfered part of parts 1 need grinding external diameter is confirmed as a build-up curve; Described build-up curve is divided into two sections, standard circular arc chamfering 2 of a section wherein, and another section is an easement curve 3; Easement curve 3 smoothly joins with standard circular arc chamfering 2.
Further improve as technical scheme of the present invention, described easement curve 3 can be an oblique line, and oblique line is a tangent runout of standard circular arc chamfering, is extended to the external diameter direction by the end of standard circular arc chamfering.
Further improve as technical scheme of the present invention, described easement curve 3 can be a curve, and the tangent line of easement curve and standard circular arc chamfering 2 intersects, and forms one and seamlessly transits curved surface.
When the described circular arc chamfering section of turning; Can select the corner radius lathe tool or the custom-designed cutter of big (generally selecting R0.8-R1.2) for use; And select for use lower feed rate (generally to select 0.1-0.2 ㎜/min), to reach the purpose that reduces surface roughness.Because surface roughness can be calculated (wherein Ra is a surface roughness value, and K is a coefficient, and f is a feed rate, and R is a corner radius) with formula Ra=K*f2/R, feed rate is low more, corner radius is big more, and the surface roughness that obtains will be more little.
Need the cutter of circular arc chamfering of the chamfered part of grinding external diameter to be as processing numerical control turning of the present invention: a kind ofly process the cutter of circular arc chamfering that numerical control turning needs the chamfered part of grinding external diameter; Comprise handle of a knife 6 and cutter head 5; Described cutter head 5 is the circular arc cutter head; It is characterized in that cutter head 5 is a circular arc cutter head that two kinds of curves are combined to form, the cutting edge 7 formed circular arcs of cutter head are two kinds of arc shapes that curve is combined to form.
Further improvement as technical scheme of the present invention; The cutting edge 7 formed circular arcs of described cutter head are two kinds of arc shapes that curve is combined to form; Can be to be divided into two sections, a standard circular arc chamfering of section cutting edge 8 wherein, another section is an easement curve cutting edge 9; Easement curve cutting edge 9 smoothly joins with standard circular arc chamfering cutting edge 8.
Further improve as technical scheme of the present invention; Described easement curve cutting edge 9 can be an oblique line; Oblique line is a tangent runout of standard circular arc chamfering cutting edge 8, extends formed cutting edge by the end of standard circular arc chamfering cutting edge 8 to the external diameter direction.
Further improve as technical scheme of the present invention, described easement curve cutting edge 9 can be a curve, and the tangent line of easement curve and standard circular arc chamfering intersects, and forms one and seamlessly transits curved surface.
Through implementing the invention described above technical scheme, have following technique effect:
(1) after the present invention's technology was implemented, products such as rotating shaft can maintain a complete R circular arc after processing, and the presentation quality of product has obtained very big improvement, and has guaranteed the assembly quality of motor.But patent art also expanded application in the processing of the R circular arc at the chamfering circular arc of endoporus and external diameter escape place.
(2) technology of the present invention is an improvement on technology and/or the cutter, and a little improvement on technology and/or the cutter just about-face and the quality that ensures whole completed knocked down products greatly, its benefit is beyond measure.
(3) technology of the present invention belongs to initiative at home, can be widely used in all kinds of mechanical industries, is particularly suitable for the manufacturing that product quality requires extra high aviation and track traffic etc. to guarantee personal safety.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction.Though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention.Any those of ordinary skill in the art; Do not breaking away under the technical scheme scope situation of the present invention; All the method for above-mentioned announcement capable of using and technology contents are made many possible changes and modification to technical scheme of the present invention, or are revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical scheme of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, be equal to replacement, equivalence changes and modify, all still belong in the scope that technical scheme of the present invention protects.
Claims (8)
1. a numerical control turning needs the processing method of the chamfering circular arc of grinding external diameter, it is characterized in that, when definite numerical control turning curve map, the circular arc chamfering of the chamfered part of need grinding external diameter is confirmed as a build-up curve; Described build-up curve is divided into two sections, standard circular arc chamfering of a section wherein, and another section is an easement curve; Easement curve and standard circular arc chamfering smoothly join.
2. numerical control turning according to claim 1 needs the processing method of the chamfering circular arc of grinding external diameter; It is characterized in that; Described easement curve can be an oblique line, and oblique line is a tangent runout of standard circular arc chamfering, is extended to the external diameter direction by the end of standard circular arc chamfering.
3. numerical control turning according to claim 1 needs the processing method of the chamfering circular arc of grinding external diameter, it is characterized in that described easement curve can be a curve, and the tangent line of easement curve and standard circular arc chamfering intersects, and forms one and seamlessly transits curved surface.
4. numerical control turning according to claim 1 needs the processing method of the chamfering circular arc of grinding external diameter; It is characterized in that; When the described circular arc chamfering section of turning; Select the lathe tool of corner radius R0.8-R1.2 for use, and select feed rate 0.1-0.2 ㎜/min for use, to reach the purpose that reduces surface roughness.
5. a numerical control turning needs the process tool of the chamfering circular arc of grinding external diameter; Comprise handle of a knife and cutter head; Described cutter head is the circular arc cutter head; It is characterized in that cutter head is a circular arc cutter head that two kinds of curves are combined to form, the formed circular arc of the cutting edge of cutter head is two kinds of arc shapes that curve is combined to form.
6. numerical control turning according to claim 5 needs the process tool of the chamfering circular arc of grinding external diameter; It is characterized in that; The formed circular arc of the cutting edge of described cutter head is two kinds of arc shapes that curve is combined to form; Can be to be divided into two sections, a standard circular arc chamfering of section cutting edge wherein, another section is an easement curve cutting edge; Easement curve cutting edge and standard circular arc chamfering cutting edge smoothly join.
7. numerical control turning according to claim 6 needs the process tool of the chamfering circular arc of grinding external diameter; It is characterized in that; Described easement curve cutting edge can be an oblique line; Oblique line is a tangent runout of standard circular arc chamfering cutting edge, extends formed cutting edge by the end of standard circular arc chamfering cutting edge to the external diameter direction.
8. numerical control turning according to claim 6 needs the process tool of the chamfering circular arc of grinding external diameter, it is characterized in that described easement curve can be a curve, and the tangent line of easement curve and standard circular arc chamfering intersects, and forms one and seamlessly transits curved surface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110453551.XA CN102528079B (en) | 2011-12-30 | 2011-12-30 | Processing method and tool of turning chamfering circular arc with outer diameter required to be ground under numerical control |
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| CN201110453551.XA CN102528079B (en) | 2011-12-30 | 2011-12-30 | Processing method and tool of turning chamfering circular arc with outer diameter required to be ground under numerical control |
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| CN102528079B CN102528079B (en) | 2015-04-22 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103522001A (en) * | 2013-09-23 | 2014-01-22 | 南车株洲电机有限公司 | Method for optimizing shape of machined chamfer |
| CN105268998A (en) * | 2015-10-28 | 2016-01-27 | 沈阳黎明航空发动机(集团)有限责任公司 | Circular-arc-shaped area turning surface roughness control method |
| CN107914046A (en) * | 2017-11-15 | 2018-04-17 | 珠海市魅族科技有限公司 | The processing method and terminal of chamfering |
| CN110587383A (en) * | 2019-09-19 | 2019-12-20 | 潘旭华 | Surface processing method of high-precision complex curved surface |
| CN113635379A (en) * | 2021-10-18 | 2021-11-12 | 中电科风华信息装备股份有限公司 | Approximate processing method for convex circular arc of corner of polaroid |
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| CN202015881U (en) * | 2011-03-14 | 2011-10-26 | 上海柴油机股份有限公司 | Combined type flat scraper with fillet |
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| CN202367221U (en) * | 2011-12-30 | 2012-08-08 | 南车株洲电机有限公司 | Tool for machining chamfer part with outer diameter required to be ground in numerical control turning |
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| CN2673542Y (en) * | 2004-02-21 | 2005-01-26 | 洛阳轴承集团有限公司 | Composite round inverted angle knife for processing bearing jacket ring |
| CN101804590A (en) * | 2010-04-01 | 2010-08-18 | 常州轻工职业技术学院 | Method for eliminating grinding crack of transition fillet externally connected with shaft shoulder |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103522001A (en) * | 2013-09-23 | 2014-01-22 | 南车株洲电机有限公司 | Method for optimizing shape of machined chamfer |
| CN105268998A (en) * | 2015-10-28 | 2016-01-27 | 沈阳黎明航空发动机(集团)有限责任公司 | Circular-arc-shaped area turning surface roughness control method |
| CN107914046A (en) * | 2017-11-15 | 2018-04-17 | 珠海市魅族科技有限公司 | The processing method and terminal of chamfering |
| CN110587383A (en) * | 2019-09-19 | 2019-12-20 | 潘旭华 | Surface processing method of high-precision complex curved surface |
| CN113635379A (en) * | 2021-10-18 | 2021-11-12 | 中电科风华信息装备股份有限公司 | Approximate processing method for convex circular arc of corner of polaroid |
| CN113635379B (en) * | 2021-10-18 | 2021-12-17 | 中电科风华信息装备股份有限公司 | Approximate processing method for convex circular arc of corner of polaroid |
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| CN102528079B (en) | 2015-04-22 |
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